tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#!/bin/bash
2# SPDX-License-Identifier: GPL-2.0
3
4lib_dir=$(dirname $0)/../../../net/forwarding
5ethtool_lib_dir=$(dirname $0)/../hw
6
7ALL_TESTS="
8 autoneg
9 autoneg_force_mode
10"
11
12NUM_NETIFS=2
13: ${TIMEOUT:=30000} # ms
14source $lib_dir/lib.sh
15source $ethtool_lib_dir/ethtool_lib.sh
16
17setup_prepare()
18{
19 swp1=${NETIFS[p1]}
20 swp2=${NETIFS[p2]}
21
22 ip link set dev $swp1 up
23 ip link set dev $swp2 up
24
25 busywait "$TIMEOUT" wait_for_port_up ethtool $swp2
26 check_err $? "ports did not come up"
27
28 busywait $TIMEOUT sh -c "ethtool $swp1 | grep -q Lanes:"
29 if [[ $? -ne 0 ]]; then
30 log_test "SKIP: driver does not support lanes setting"
31 exit 1
32 fi
33
34 ip link set dev $swp2 down
35 ip link set dev $swp1 down
36}
37
38check_lanes()
39{
40 local dev=$1; shift
41 local lanes=$1; shift
42 local max_speed=$1; shift
43 local chosen_lanes
44
45 chosen_lanes=$(ethtool $dev | grep 'Lanes:')
46 chosen_lanes=${chosen_lanes#*"Lanes: "}
47
48 ((chosen_lanes == lanes))
49 check_err $? "swp1 advertise $max_speed and $lanes, devs sync to $chosen_lanes"
50}
51
52check_unsupported_lanes()
53{
54 local dev=$1; shift
55 local max_speed=$1; shift
56 local max_lanes=$1; shift
57 local autoneg=$1; shift
58 local autoneg_str=""
59
60 local unsupported_lanes=$((max_lanes *= 2))
61
62 if [[ $autoneg -eq 0 ]]; then
63 autoneg_str="autoneg off"
64 fi
65
66 ethtool -s $swp1 speed $max_speed lanes $unsupported_lanes $autoneg_str &> /dev/null
67 check_fail $? "Unsuccessful $unsupported_lanes lanes setting was expected"
68}
69
70max_speed_and_lanes_get()
71{
72 local dev=$1; shift
73 local arr=("$@")
74 local max_lanes
75 local max_speed
76 local -a lanes_arr
77 local -a speeds_arr
78 local -a max_values
79
80 for ((i=0; i<${#arr[@]}; i+=2)); do
81 speeds_arr+=("${arr[$i]}")
82 lanes_arr+=("${arr[i+1]}")
83 done
84
85 max_values+=($(get_max "${speeds_arr[@]}"))
86 max_values+=($(get_max "${lanes_arr[@]}"))
87
88 echo ${max_values[@]}
89}
90
91search_linkmode()
92{
93 local speed=$1; shift
94 local lanes=$1; shift
95 local arr=("$@")
96
97 for ((i=0; i<${#arr[@]}; i+=2)); do
98 if [[ $speed -eq ${arr[$i]} && $lanes -eq ${arr[i+1]} ]]; then
99 return 1
100 fi
101 done
102 return 0
103}
104
105autoneg()
106{
107 RET=0
108
109 local lanes
110 local max_speed
111 local max_lanes
112
113 local -a linkmodes_params=($(dev_linkmodes_params_get $swp1 1))
114 local -a max_values=($(max_speed_and_lanes_get $swp1 "${linkmodes_params[@]}"))
115 max_speed=${max_values[0]}
116 max_lanes=${max_values[1]}
117
118 lanes=$max_lanes
119
120 while [[ $lanes -ge 1 ]]; do
121 search_linkmode $max_speed $lanes "${linkmodes_params[@]}"
122 if [[ $? -eq 1 ]]; then
123 ethtool_set $swp1 speed $max_speed lanes $lanes
124 ip link set dev $swp1 up
125 ip link set dev $swp2 up
126
127 busywait $TIMEOUT sh -c "ethtool $swp1 | grep -q Lanes:"
128 check_err $? "Lanes parameter is not presented on time"
129
130 check_lanes $swp1 $lanes $max_speed
131 log_test "$lanes lanes is autonegotiated"
132 fi
133 let $((lanes /= 2))
134 done
135
136 check_unsupported_lanes $swp1 $max_speed $max_lanes 1
137 log_test "Lanes number larger than max width is not set"
138
139 ip link set dev $swp2 down
140 ip link set dev $swp1 down
141}
142
143autoneg_force_mode()
144{
145 RET=0
146
147 local lanes
148 local max_speed
149 local max_lanes
150
151 local -a linkmodes_params=($(dev_linkmodes_params_get $swp1 1))
152 local -a max_values=($(max_speed_and_lanes_get $swp1 "${linkmodes_params[@]}"))
153 max_speed=${max_values[0]}
154 max_lanes=${max_values[1]}
155
156 lanes=$max_lanes
157
158 while [[ $lanes -ge 1 ]]; do
159 search_linkmode $max_speed $lanes "${linkmodes_params[@]}"
160 if [[ $? -eq 1 ]]; then
161 ethtool_set $swp1 speed $max_speed lanes $lanes autoneg off
162 ethtool_set $swp2 speed $max_speed lanes $lanes autoneg off
163 ip link set dev $swp1 up
164 ip link set dev $swp2 up
165
166 busywait $TIMEOUT sh -c "ethtool $swp1 | grep -q Lanes:"
167 check_err $? "Lanes parameter is not presented on time"
168
169 check_lanes $swp1 $lanes $max_speed
170 log_test "Autoneg off, $lanes lanes detected during force mode"
171 fi
172 let $((lanes /= 2))
173 done
174
175 check_unsupported_lanes $swp1 $max_speed $max_lanes 0
176 log_test "Lanes number larger than max width is not set"
177
178 ip link set dev $swp2 down
179 ip link set dev $swp1 down
180
181 ethtool -s $swp2 autoneg on
182 ethtool -s $swp1 autoneg on
183}
184
185check_ethtool_lanes_support
186setup_prepare
187
188tests_run
189
190exit $EXIT_STATUS